diff --git a/Gemfile.lock b/Gemfile.lock
index 3ecf8b7d..4c0350d8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,18 +2,20 @@ GEM
   remote: http://rubygems.org/
   specs:
     addressable (2.3.8)
-    daemons (1.2.3)
+    daemons (1.4.1)
     diff-lcs (1.2.5)
     em-websocket (0.3.8)
       addressable (>= 2.1.1)
       eventmachine (>= 0.12.9)
-    eventmachine (1.0.8)
+    eventmachine (1.2.7)
     ffi (1.9.10)
     listen (3.0.5)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    rack (1.6.4)
-    rack-protection (1.5.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rb-fsevent (0.9.6)
     rb-inotify (0.9.5)
@@ -33,20 +35,22 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.4.0)
     rspec-support (3.4.1)
+    ruby2_keywords (0.0.5)
     sass (3.4.19)
-    sinatra (1.4.6)
-      rack (~> 1.4)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
+    sinatra (2.2.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
+      tilt (~> 2.0)
     sinatra-websocket (0.3.1)
       em-websocket (~> 0.3.6)
       eventmachine
       thin (>= 1.3.1, < 2.0.0)
-    thin (1.6.4)
+    thin (1.8.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
-      rack (~> 1.0)
-    tilt (2.0.1)
+      rack (>= 1, < 3)
+    tilt (2.0.10)
 
 PLATFORMS
   ruby